CAJ | 학술논문

温度是影响熔岩玻璃体溶解速度的关键因素，为此，本文计算了核试验后10～300000d内熔岩玻璃体中核素衰变热功率，评估了核素衰变热功率对熔岩玻璃体的温度和溶解速度的影响程度。采用了国际原子能机构给出的100ktTNT当量地下核试验产生的、半衰期大于1a的放射性核素含量，利用其中裂变产物核素137Cs的含量推算累积裂变产额大于0.1％、半衰期为1d～1a的短寿命裂变产物核素的含量。分析了各核素的放射性衰变特点，采用ENDF/BⅦ库中核素衰变辐射的平均α能量、平均电子能量和平均电磁辐射能量计算各核素在熔岩玻璃体内因衰变而沉积的能量。计算结果表明：核素衰变热功率呈分段幂函数衰减；在10～2000d、2000～60000d和60000d之后的时段内，衰变热功率分别主要源于短寿命裂变产物核素、长寿命裂变产物核素和锕系元素。核素衰变热功率对熔岩玻璃体的温度和溶解速度的影响不大，1000d后影响非常小。
온도시영향용암파리체용해속도적관건인소，위차，본문계산료핵시험후10～300000d내용암파리체중핵소쇠변열공솔，평고료핵소쇠변열공솔대용암파리체적온도화용해속도적영향정도。채용료국제원자능궤구급출적100ktTNT당량지하핵시험산생적、반쇠기대우1a적방사성핵소함량，이용기중렬변산물핵소137Cs적함량추산루적렬변산액대우0.1％、반쇠기위1d～1a적단수명렬변산물핵소적함량。분석료각핵소적방사성쇠변특점，채용ENDF/BⅦ고중핵소쇠변복사적평균α능량、평균전자능량화평균전자복사능량계산각핵소재용암파리체내인쇠변이침적적능량。계산결과표명：핵소쇠변열공솔정분단멱함수쇠감；재10～2000d、2000～60000d화60000d지후적시단내，쇠변열공솔분별주요원우단수명렬변산물핵소、장수명렬변산물핵소화아계원소。핵소쇠변열공솔대용암파리체적온도화용해속도적영향불대，1000d후영향비상소。
As the temperature is a key factor affecting melt glass dissolution rate ,the decay heat power generated by radionuclides within melt glass from 10 d to 300 000 d after an underground nuclear test was calculated to assess its influence on temperature and dissolution rate .Radioactive inventories with half-life longer than 1 a ,produced by 100 kt TNT nuclear explosion published by IAEA report were used .The inventories of short-lived fission products with half-life of 1 d-1 a and accumulate yield greater than 0.1% were estimated from the inventory of 137Cs .The decay characteristics of each nuclide were analyzed .The decay energy deposited in melt glass was calculated by the mean alpha , beta and gamma energy released by radioactive decay from ENDF/B Ⅶdatabase .From the calculation ,it can be concluded that the decay heat power decays by power function ,short-lived fission products ,long-lived fission products and actinides are the main contributions to the power at 10-2 000 d , 2 000-60 000 d and after 60 000 d ,respectively .T he influence on melt glass temperature and dissolution rate is indistinctive ,especially after 1 000 d .